Finding the Fourth Proportional to 11,265.57, 16,856.51 and 7,086.06

Step by Step Solution

1. Step 1: Write the proportion equation
   11,265.57 : 16,856.51 = 7,086.06 : x
2. Step 2: Convert to fraction form
   11,265.57/16,856.51 = 7,086.06/x
3. Step 3: Cross multiply
   11,265.57x = 16,856.51 × 7,086.06
4. Step 4: Simplify right side
   11,265.57x = 119,446,205.82
5. Step 5: Solve for x
   x = 119,446,205.82/11,265.57
6. Step 6: Final answer
   x = 10,602.77